57123361 has 2 divisors, whose sum is σ = 57123362. Its totient is φ = 57123360.

The previous prime is 57123323. The next prime is 57123401. The reversal of 57123361 is 16332175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 4124961 = 7280^2 + 2031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57123361 is a prime.

It is not a weakly prime, because it can be changed into another prime (57123761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28561680 + 28561681.

It is an arithmetic number, because the mean of its divisors is an integer number (28561681).

Almost surely, 2^57123361 is an apocalyptic number.

It is an amenable number.

57123361 is a deficient number, since it is larger than the sum of its proper divisors (1).

57123361 is an equidigital number, since it uses as much as digits as its factorization.

57123361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 57123361 is about 7557.9998015348. Note that the first 3 decimals coincide. The cubic root of 57123361 is about 385.1275475526.

It can be divided in two parts, 571 and 23361, that added together give a palindrome (23932).

The spelling of 57123361 in words is "fifty-seven million, one hundred twenty-three thousand, three hundred sixty-one".